CN212157829U - Vacuum heat insulation refrigerator door - Google Patents
Vacuum heat insulation refrigerator door Download PDFInfo
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- CN212157829U CN212157829U CN202020860789.9U CN202020860789U CN212157829U CN 212157829 U CN212157829 U CN 212157829U CN 202020860789 U CN202020860789 U CN 202020860789U CN 212157829 U CN212157829 U CN 212157829U
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Abstract
The utility model relates to a vacuum heat insulation refrigerator door body, which comprises an inner panel, an outer panel, a frame and a heat insulation component; the inner panel and the outer panel are respectively attached to the inner side face and the outer side face of the frame, and the inner panel, the outer panel and the frame are enclosed to form a vacuum cavity; and a heat insulation assembly is flatly laid between the inner panel and the outer panel. The utility model discloses regard the refrigerator door body as a vacuum thermal insulator to set up reflecting screen and multilayer heat-insulating material in the vacuum cavity, improved the thermal insulation performance of refrigerator, reduce the thickness of the refrigerator door body, can not cause destruction, pollution-free to ozone.
Description
Technical Field
The utility model relates to a refrigerator heat preservation technical field especially relates to a vacuum insulation refrigerator door body.
Background
The technical scheme of the refrigerator door production process disclosed in the patent number CN103448191A comprises the following steps: placing the assembled door shell into a lower die, and placing the door liner into an upper die; carrying out primary foam injection, injecting a polyurethane foam material into the door shell, and putting the vacuum insulation plate into the door shell; injecting foam for the second time, and injecting the residual polyurethane foam material in the foaming gun head onto the vacuum insulation panel of the door shell; and (4) moving the foaming gun head away, and closing the mold to solidify the polyurethane foaming material. Therefore, the heat insulation principle of the existing refrigerator door body is as follows: the refrigerator has heat insulating capacity by placing heat insulating materials such as polyurethane foam and vacuum heat insulating plates between the refrigerator panel and the refrigerator liner.
The existing refrigerator door body has the defects that: the vacuum insulation panel is filled with glass fiber materials as core materials, and a large amount of gas adsorbed by the core materials is released in the using process, so that the heat insulation performance of the vacuum insulation panel is reduced, and the energy consumption of the refrigerator is improved; the polyurethane foaming heat preservation and vacuum heat insulation plate material is used as a spacing heat insulation material and is clamped between the refrigerator panel and the inner container, the thickness of the refrigerator door is larger, and the storage space of the refrigerator is occupied; the polyurethane foaming thermal insulation material contains fluoride, can damage an ozone layer, and has the risk of being limited in use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an among the prior art, refrigerator door thermal insulation performance is poor, and the refrigerator power consumption is high, and refrigerator door thickness is big, has taken refrigerator storing space's problem, provides a vacuum insulation heat preservation refrigerator door body.
In order to achieve the purpose, the utility model adopts the technical proposal that:
the utility model relates to a vacuum heat insulation refrigerator door body, which comprises an inner panel, an outer panel, a rectangular frame and a heat insulation component; the inner panel and the outer panel are respectively attached to the inner side face and the outer side face of the frame, and the inner panel, the outer panel and the frame are enclosed to form a vacuum cavity; and a heat insulation assembly is flatly laid between the inner panel and the outer panel.
The vacuum environment formed by the enclosing of the inner panel, the outer panel and the frame reduces the heat of convective heat transfer among gas molecules and between the gas molecules and the outer panel and the inner panel through the heat transfer of molecular heat motion, so that the inner panel is kept in a low-temperature state.
Preferably, the heat insulation assembly comprises a reflection screen and a plurality of layers of heat insulation materials, the reflection screen comprises an inner layer reflection screen and an outer layer reflection screen, the inner layer reflection screen is arranged on the inner side of the plurality of layers of heat insulation materials, the outer layer reflection screen is arranged on the outer side of the plurality of layers of heat insulation materials, the plurality of layers of heat insulation materials are clamped between the two layers of reflection screens, a gap is formed between the inner layer reflection screen and the inner panel, and a gap is formed between the outer layer reflection screen and the outer panel.
The reflecting screen and the multilayer heat-insulating material can isolate the heat transferred from the high-temperature outer panel to the low-temperature inner panel through infrared rays, and simultaneously reduce the heat transferred from the high-temperature outer panel to the low-temperature inner panel.
The thickness of the reflecting screen and the multilayer heat-insulating material is only several millimeters, and the reflecting screen and the multilayer heat-insulating material are only 1/3 of the heat-insulating material of the existing refrigerator door, so that the door body of the vacuum heat-insulating refrigerator is thinner, and the storage space of the refrigerator is improved.
Preferably, a plurality of supporting components are arranged in the cavity at intervals, a plurality of holes for mounting the supporting components are arranged on the heat insulation component at intervals, and two ends of each supporting component are respectively and tightly supported with the inner panel and the outer panel.
Preferably, the supporting component include protruding support column, concave support column and three-layer heat insulation ring, concave support column pastes the inboard at outer panel, and the outside of panel including protruding support column pastes, protruding support column and the concave support column buckle connection that corresponds, the outer lane of protruding support column and concave support column forms twice annular arch, the reflecting screen press from both sides tightly respectively between adjacent heat insulation ring, reflecting screen, heat insulation ring and multilayer thermal insulation material pass through the protruding clamp connection of protruding support column and concave support column outer lane.
The supporting component plays a role in preventing the outer panel and the inner panel from being deformed in a destabilizing manner in a vacuum state, and is used for fixing the reflecting screen and the multilayer heat-insulating material.
Preferably, the reflecting screen is a stainless steel double-sided mirror sheet. The stainless steel double-sided mirror thin plate can be used for fixing multiple layers of heat insulating materials and reflecting most of radiation, so that the radiation heat exchange of the outer panel to the inner panel is reduced, and meanwhile, the stainless steel double-sided mirror thin plate can also reduce the radiation of the stainless steel double-sided mirror thin plate.
Preferably, the multilayer heat-insulating material comprises a plurality of heat-insulating units which are sequentially overlapped and combined, and each heat-insulating unit is formed by overlapping and combining a plurality of layers of flame-retardant glass fiber paper and a layer of aluminum foil. The aluminum foil plays a role in reflecting radiation.
Preferably, a plurality of air eliminators are arranged inside the cavity, the air eliminators are fixed on the inner panel through the mesh cup, and the mesh cup is fixed on the inner panel through spot welding. The getter can absorb residual gas slowly released from the vacuum door body into the getter or generate new stable compounds, thereby maintaining excellent vacuum degree in the refrigerator door body.
Preferably, a plurality of evacuation ports are arranged on the inner panel, and a brazing material block which can be melted in a heating state is placed at an inlet of each evacuation port. The brazing filler metal piece that the mouth entry of managing to find time placed make and to manage to find time the back and can seal the evacuation mouth, stop the inside of external gas to the refrigerator door body reveal, panel one side including the mouth setting will find time, do not influence the level and smooth of outer panel, the storing frame on the refrigerator door will find time the mouth simultaneously and shelter from, does not influence pleasing to the eye and use.
Preferably, the inner panel is attached to the inner side of the frame through vacuum sealant, and the outer panel is attached to the outer side of the frame through vacuum sealant.
Preferably, the concave supporting columns are adhered to the inner side of the outer panel through vacuum sealing glue, and the convex supporting columns are adhered to the outer side of the inner panel through vacuum sealing glue.
Preferably, the frame is formed in one step by adopting an injection mold, the section of the frame is C-shaped, and a compression spring is arranged inside the frame. Adopt injection mold one shot forming and set up compression spring can reduce the thickness of frame to a certain extent, guarantee the compressive strength of frame simultaneously.
Preferably, the convex supporting columns, the concave supporting columns and the heat insulation rings are made of polytetrafluoroethylene materials with low thermal conductivity. The convex support columns, the concave support columns and the heat insulation rings are made of polytetrafluoroethylene materials which are good in heat insulation performance, have good vacuum airtightness and are suitable for a high-vacuum environment, and the heat insulation structure is beneficial to maintaining the vacuum degree in the refrigerator door body and reducing heat leakage caused by heat conduction.
The frame is made of polytetrafluoroethylene materials. Because metal material conducts the heat of the outer panel of door body to the inner panel promptly inside the refrigerator easily, increases the energy consumption of refrigerator, so the frame adopts the material polytetrafluoroethylene that the heat conductivity is little, to the not enough problem of compressive strength that polytetrafluoroethylene exists, firstly increases frame thickness, secondly increases the compressive capacity of spring in order to increase the frame in the frame is inside. The polytetrafluoroethylene has the characteristics of vacuum compactness, small air release amount, easiness in forming, good stability, no harm to a human body at normal temperature, low heat conductivity and the like, has certain heat resistance, and meets the temperature resistance requirements of subsequent manufacturing processes needing heating, such as vacuumizing, heating, heat sealing after vacuumizing, activation of an air eliminator and the like.
The outer panel is made of common austenitic stainless steel materials, and the inner panel is made of food-grade austenitic stainless steel materials. The material design of the inner panel can ensure the requirement of the sanitation of the stored food. The material design of the outer panel can be processed by wire drawing and other beautification treatments or adhered with decorative plates.
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
1. the utility model discloses interior panel and outside panel adopt the sealed laminating of gluing of vacuum respectively in the frame, the lateral surface for interior panel, outside panel and frame enclose to close and form a vacuum cavity, and the inside of cavity is equipped with a plurality of air detraining agents, reflecting screen and multilayer heat-insulating material, the utility model discloses use high vacuum heat insulation theory and technique, combine the super thermal insulation performance of high vacuum heat insulation multilayer material, regard the refrigerator door body as a vacuum heat insulator, rather than regard as the spacer between panel and the inner bag to insulation material, improved the thermal insulation performance of refrigerator, reduce the thickness of the refrigerator door body, and then increase the storing space of refrigerator.
2. The utility model discloses the cross-section of frame is "C" style of calligraphy, and the material of frame adopts polytetrafluoroethylene to adopt injection mold one shot forming. The polytetrafluoroethylene has the characteristics of vacuum compactness, small air release amount, easiness in forming, good stability, no harm to a human body at normal temperature, low heat conductivity and the like, has certain heat resistance, can reduce the thickness of the frame to a certain extent by adopting one-step forming of an injection mold for meeting the requirements of a subsequent manufacturing process needing heating such as vacuumizing, heating, heat sealing after vacuumizing, activation of a getter and the like on temperature resistance, and is provided with a compression spring inside the frame, so that the compressive strength of the frame is ensured.
3. The utility model discloses an inside hollow structure that is of refrigerator door body no longer fills the polyurethane foamer, consequently does not have the fluoride, can not cause destruction, pollution-free to ozone.
Drawings
FIG. 1 is an external view of a vacuum heat-insulation refrigerator door according to the present invention;
FIG. 2 is an exploded view of a door of a vacuum heat-insulating refrigerator;
FIG. 3 is a sectional view of the door body of the vacuum heat-insulating refrigerator;
FIG. 4 is a top view of the door of the vacuum heat insulation refrigerator.
Description of the labeling: 1-outer panel, 2-inner panel, 3-vacuum sealant, 4-frame, 5-compression spring, 6-convex support column, 7-concave support column, 8-heat insulation ring, 9-reflecting screen, 10-multilayer heat insulation material, 11-getter, 12-mesh cup, 13-evacuation port and 14-brazing material block.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
Referring to the attached drawings 1-3, the utility model relates to a vacuum insulation refrigerator door body includes interior panel 2, outer panel 1, frame 4 and adiabatic subassembly, and interior panel 2 and outer panel 1 bond on the medial surface and the lateral surface of frame 4 through sealed glue 3 of vacuum respectively, and interior panel 2, outer panel 1 and frame 4 enclose to close and form a vacuum cavity, interior panel 2 and outer panel 1 between the tiling have adiabatic subassembly.
Referring to fig. 3 and 4, the outer panel 1 is made of common austenitic stainless steel, the inner panel 2 is made of food-grade austenitic stainless steel, and the design can ensure the requirement of food sanitation storage and can perform beautification treatment such as wire drawing on the outer panel or bond decorative plates according to requirements. Be equipped with a plurality of evacuation mouth 13 on the inner panel 2, the filler metal piece 14 that melts under the heating state is placed to the entrance of evacuation mouth 13, the inside of cavity be equipped with a plurality of air detraining agents 11, air detraining agent 11 is fixed on the inner panel through net cup 12, net cup 12 is fixed on inner panel 2 through the mode of spot welding, this embodiment puts air detraining agent 11 and evacuation mouth 13 in inner panel one side, does not influence the level and smooth of outer panel, and the storing frame on the refrigerator door shelters from above-mentioned two positions simultaneously, does not influence pleasing to the eye and use. The brazing filler metal block 14 placed at the inlet of the evacuation port 13 is melted after being heated, and the evacuation port 13 is sealed after being cooled and solidified, so that the leakage of external gas to the interior of the refrigerator door body is avoided; the getter 11 placed inside the refrigerator door body is activated after high temperature, so that residual gas slowly released in the vacuum door body can be adsorbed in the getter or new stable compounds are generated, and excellent vacuum degree in the refrigerator door body is maintained.
Referring to fig. 3 and 4, the frame 4 is made of polytetrafluoroethylene, the frame 4 is formed in one step by using an injection mold, the section of the frame 4 is in a C shape, and a compression spring 5 is arranged inside the frame 4. The frame 4 is made of tetrafluoroethylene material instead of traditional metal frame, because: the metal material conducts the heat of the outer panel 1 of the door body to the inner panel 2, namely the inside of the refrigerator, the energy consumption of the refrigerator can be increased, the adopted polytetrafluoroethylene material has the characteristics of vacuum compactness, small air release amount, easiness in forming, good stability, no harm to a human body at normal temperature, low heat conduction rate and the like, and meanwhile, the polytetrafluoroethylene material has certain heat resistance, and has the requirements of the manufacturing process needing heating on temperature resistance on subsequent vacuumizing, heating, heat sealing after vacuumizing, activation of an air getter 11 and the like, the thickness of the frame can be reduced to a certain extent by adopting one-step forming of an injection mold, the compressive strength of the frame 4 is ensured, and the compression spring 5 is used for further improving the compressive strength of the frame.
Referring to fig. 3, the inner panel 2 and the outer panel 1 are respectively attached to the inner side and the outer side of the frame 4 by vacuum sealant 3, the inner panel 2, the outer panel 1 and the frame 4 enclose to form a vacuum cavity, the cavity is internally provided with a supporting component at intervals, the heat insulation component is provided with a plurality of holes for installing the supporting component at intervals, two ends of the supporting component are respectively and tightly supported with the inner panel and the outer panel, two ends of the supporting component are respectively and tightly contacted with the inner panel and the outer panel, the supporting component include protruding support column 6, concave support column 7 and three-layer heat insulating ring 8, concave support column 7 pastes the inboard at outer panel 1 through sealed 3 of glue in vacuum, the sealed 3 outside of pasting inner panel 2 of glue in protruding support column 6 through the vacuum, protruding support column 6 is connected with the 7 buckles of the concave support column that correspond, the outer lane of protruding support column 6 and concave support column 7 forms twice annular arch. The supporting component plays a role in preventing the outer panel 1 and the inner panel 2 from being deformed in a destabilizing way in a vacuum state and is used for fixing the heat insulation component; the convex support columns 6, the concave support columns 7 and the heat insulation ring 8 are all made of polytetrafluoroethylene materials with low heat conductivity, and are made of materials with good heat insulation performance, good vacuum airtightness and suitability for high-vacuum environment, so that the heat insulation structure is favorable for maintaining the vacuum degree in the refrigerator door body and reducing the heat leakage phenomenon caused by heat conduction.
Referring to fig. 2 and 3, the heat insulation assembly includes a reflection screen 9 and a multi-layer heat insulation material 10, the reflection screen 9 includes two layers of an inner reflection screen and an outer reflection screen, the inner reflection screen is disposed inside the multi-layer heat insulation material 10, the outer reflection screen is disposed outside the multi-layer heat insulation material 10, the multi-layer heat insulation material 10 is clamped between the two layers of reflection screens 9, a gap is formed between the inner reflection screen and the inner panel 2, and a gap is formed between the outer reflection screen and the outer panel 1. Reflecting screen 9 adopt the two-sided mirror surface sheet metal of stainless steel, multilayer heat insulating material 10 include a plurality of adiabatic units that superpose the combination in proper order, every adiabatic unit forms by a plurality of layers of fire resistance glass fiber paper and one deck aluminium foil stack combination, the two-sided mirror surface sheet metal of stainless steel can reflect most radiation, and then reduce the radiation heat transfer of outside panel to interior panel, simultaneously, the two-sided mirror surface sheet metal of stainless steel can also reduce the radiation of self, the aluminium foil also can play the effect of reflection radiation.
Referring to fig. 3, the reflective screen 9 and the heat insulation ring 8 are arranged at intervals, and the reflective screen 9, the heat insulation ring 8 and the multi-layer heat insulation material 10 are connected in a clamping manner through bulges at the outer circles of the convex support columns 6 and the concave support columns 7. The refrigerator door body is of a plane structure and has poor pressure bearing capacity, when the interior of the door body is vacuumized, the two sides of the outer panel 1 and the inner panel 2 bear 0.1MPa of pressure difference, the panels are easy to be unstable, the surfaces of the panels are uneven, the vacuum tightness and the attractiveness of the frame 4 are affected, the supporting assembly not only plays a role in fixing the reflecting screen 9 and the multilayer heat-insulating material 10, but also prevents the outer panel 1 and the inner panel 2 from being unstable and deforming in a vacuum state.
The utility model relates to a production method of a vacuum heat insulation refrigerator door body, which comprises the following steps: firstly, adhering a concave supporting column 7 on an outer panel 1, adhering a convex supporting column 7 on an inner panel 2, installing a getter 11 on a mesh cup 12 on the inner panel 2, and installing a reflecting screen 9 and a multilayer heat-insulating material 10 on the concave supporting column 7 through a heat-insulating ring 8; then the outer panel 1 is pasted to the outer side of the frame 4 with the compression spring 5 through the vacuum sealant 3, the inner panel 2 is pasted to the inner side of the frame 4 with the compression spring 5 through the vacuum sealant 3, the air in the cavity is pumped by utilizing the pumping-out opening 13, the brazing filler metal block 14 is heated and melted after the hollow cavity is formed, and the pumping-out opening 13 is plugged, so that the circulation of air inside and outside the door body is prevented; and finally, heating the getter 11 at high temperature to activate the getter 11, wherein the getter 11 adsorbs gas released by parts in the refrigerator door body after sealing, and the vacuum degree is further improved.
The utility model discloses a heat preservation principle of vacuum insulation refrigerator door body does:
1. the utility model discloses an evacuation mouth 13 takes out the inside air of the refrigerator door body, and after the evacuation, make brazing filler metal piece 14 melt through the heating, make it carry out the shutoff to evacuation mouth 13, use the adiabatic theory of high vacuum and technique, reduce between the gas molecule and between gas molecule and outer panel and the interior panel through the heat convection of molecule thermal motion transfer heat, improved the adiabatic performance of the refrigerator door body.
2. Because the internal parts of the refrigerator door body can release gas after being sealed, the internal vacuum degree is damaged, the heat insulation performance of the door body is reduced, and even the vacuum heat insulation effect is invalid, and the gas release process is slow and can not be finished, the getter 11 is arranged in the refrigerator door body, after being sealed, the getter 11 has excellent getter capacity through high-temperature heating activation of the getter 11, so that the getter 11 adsorbs the gas released by the internal parts of the refrigerator door body after being sealed, the vacuum degree is further improved, and the heat insulation performance of the refrigerator door body is ensured.
3. The reflecting screen 9 is a stainless steel double-sided mirror sheet which can reflect most of radiation, the stainless steel double-sided mirror sheet can reduce the radiation of the stainless steel double-sided mirror sheet, the radiation heat exchange of the outer panel to the inner panel is further reduced, and the aluminum foil in the multilayer heat insulating material 10 also plays a role in reflecting heat radiation. Therefore, the reflecting screen 9 and the multi-layer insulating material 10 can reduce the amount of heat transferred from the high-temperature outer panel 1 to the low-temperature inner panel 2 while insulating the heat transferred from the high-temperature outer panel 1 to the low-temperature inner panel 2 by infrared rays.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (9)
1. A vacuum heat insulation refrigerator door body is characterized in that: the heat insulation plate comprises an inner panel, an outer panel, a rectangular frame and a heat insulation assembly; the inner panel and the outer panel are respectively attached to the inner side face and the outer side face of the frame, and the inner panel, the outer panel and the frame are enclosed to form a vacuum cavity; and a heat insulation assembly is flatly laid between the inner panel and the outer panel.
2. The vacuum heat insulation refrigerator door body according to claim 1, characterized in that: the heat insulation assembly comprises a reflection screen and a plurality of layers of heat insulation materials, the reflection screen comprises an inner layer reflection screen and an outer layer reflection screen, the inner layer reflection screen is arranged on the inner side of the plurality of layers of heat insulation materials, the outer layer reflection screen is arranged on the outer side of the plurality of layers of heat insulation materials, the plurality of layers of heat insulation materials are clamped between the two layers of reflection screens, a gap is formed between the inner layer reflection screen and the inner panel, and a gap is formed between the outer layer reflection screen and the outer.
3. The vacuum heat insulation refrigerator door body according to claim 2, characterized in that: the cavity in the interval be equipped with a plurality of supporting component, adiabatic subassembly on the interval be provided with a plurality of hole that is used for installing supporting component, supporting component's both ends respectively with interior panel and the tight support of panel outside.
4. The vacuum heat insulation refrigerator door body according to claim 3, characterized in that: the supporting component comprises a convex supporting column, a concave supporting column and three layers of heat insulation rings, the concave supporting column is pasted on the inner side of the outer panel, the convex supporting column is pasted on the outer side of the inner panel, the convex supporting column is connected with the corresponding concave supporting column in a buckling mode, the outer rings of the convex supporting column and the concave supporting column form two annular bulges, the reflecting screen is clamped between the adjacent heat insulation rings respectively, and the reflecting screen, the heat insulation rings and the multilayer heat insulation materials are connected in a clamping mode through the bulges of the outer rings of the convex supporting column and the concave supporting column.
5. The vacuum heat insulation refrigerator door body according to claim 2, characterized in that: the reflecting screen adopts a stainless steel double-sided mirror surface thin plate; the multilayer heat-insulating material comprises a plurality of heat-insulating units which are sequentially overlapped and combined, and each heat-insulating unit is formed by overlapping and combining a plurality of layers of flame-retardant glass fiber paper and a layer of aluminum foil.
6. The vacuum heat insulation refrigerator door body according to claim 1, characterized in that: the inner part of the cavity is provided with a plurality of air eliminators, the air eliminators are fixed on the inner panel through the mesh cup, and the mesh cup is fixed on the inner panel through spot welding.
7. The vacuum heat insulation refrigerator door body according to claim 1, characterized in that: the inner panel is provided with a plurality of evacuation ports, and a brazing material block which can be melted in a heating state is placed at an inlet of each evacuation port.
8. The vacuum heat insulation refrigerator door body according to claim 4, characterized in that: the inner panel is attached to the inner side of the frame through vacuum sealant, and the outer panel is attached to the outer side of the frame through the vacuum sealant; the concave supporting columns are adhered to the inner side of the outer panel through vacuum sealing glue, and the convex supporting columns are adhered to the outer side of the inner panel through vacuum sealing glue.
9. The vacuum heat insulation refrigerator door body according to claim 1, characterized in that: the frame adopt injection mold one shot forming, the cross-section of frame is "C" style of calligraphy, the inside of frame is equipped with compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020860789.9U CN212157829U (en) | 2020-05-21 | 2020-05-21 | Vacuum heat insulation refrigerator door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020860789.9U CN212157829U (en) | 2020-05-21 | 2020-05-21 | Vacuum heat insulation refrigerator door |
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| Publication Number | Publication Date |
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| CN212157829U true CN212157829U (en) | 2020-12-15 |
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| CN202020860789.9U Active CN212157829U (en) | 2020-05-21 | 2020-05-21 | Vacuum heat insulation refrigerator door |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457657A (en) * | 2020-05-21 | 2020-07-28 | 杭州富士达特种材料股份有限公司 | Vacuum heat insulation refrigerator door |
| CN113819754A (en) * | 2021-10-12 | 2021-12-21 | 中国科学院沈阳科学仪器股份有限公司 | Vacuum resistance furnace heat shielding structure |
-
2020
- 2020-05-21 CN CN202020860789.9U patent/CN212157829U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457657A (en) * | 2020-05-21 | 2020-07-28 | 杭州富士达特种材料股份有限公司 | Vacuum heat insulation refrigerator door |
| CN113819754A (en) * | 2021-10-12 | 2021-12-21 | 中国科学院沈阳科学仪器股份有限公司 | Vacuum resistance furnace heat shielding structure |
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